COSMOS 249 DEB, 3923
Orbit data source: Space-Track
COSMOS 249 DEB, 3923 is space debris in LEO originally from a launch on Sun, 20 Oct 1968 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
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3923 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 COSMOS 249 DEB
1 3923U 68091BR 26222.55471096 .00000990 00000-0 66038-3 0 9996
2 3923 62.2297 281.0591 0578505 220.5371 135.1184 13.45589077723939Epoch: 2026-08-10T13:18Z
TLE epoch observation values (Epoch: 2026-08-10T13:18:47.026Z)
Latitude
-0.00002°
Longitude
122.32747°
Altitude
1,407.982 km
Speed
7.003 km/s
True Right ascension
18h 44m 14s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
16:01:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,519.394 km
Perigee altitude
655.612 km
Semi-major axis
7,465.64 km
Eccentricity
0.05785
Inclination
62.2297°
RAAN
281.0591°
Arg. of periapsis
220.5371°
True anomaly
139.56339°
Mean anomaly
135.1184°
Eccentric anomaly
137.36352°
Mean motion
3.36467 °/min
Orbital period
106.99 mins
BSTAR
0.00066038
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Other satellites on launch #91 in the year 1968 (1968-10-20 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 249 DEB Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-08-11 03:42:22.771Z | 132.255° SE | 2026-08-11 03:46:22.771Z | 105.344° ESE | 14.95° | 2026-08-11 03:51:22.771Z | 72.092° E |
| 16 mins | 2026-08-11 05:28:22.771Z | 199.229° SSW | 2026-08-11 05:36:22.771Z | 116.306° SE | 43.028° | 2026-08-11 05:44:22.771Z | 40.931° NE |
| 15 mins | 2026-08-11 07:20:22.771Z | 255.954° W | 2026-08-11 07:27:22.771Z | 312.408° NW | 32.518° | 2026-08-11 07:35:22.771Z | 24.462° NE |
| 9 mins | 2026-08-11 09:17:22.771Z | 313.475° NW | 2026-08-11 09:21:22.771Z | 342.902° N | 16.862° | 2026-08-11 09:26:22.771Z | 20.633° NNE |
| 7 mins | 2026-08-11 11:12:22.771Z | 342.77° N | 2026-08-11 11:16:22.771Z | 13.832° NNE | 15.253° | 2026-08-11 11:19:22.771Z | 38.931° NE |
| 11 mins | 2026-08-11 13:04:22.771Z | 341.814° N | 2026-08-11 13:09:22.771Z | 33.545° NE | 29.56° | 2026-08-11 13:15:22.771Z | 101.62° ESE |
| 11 mins | 2026-08-11 14:55:22.771Z | 314.177° NW | 2026-08-11 15:00:22.771Z | 257.564° W | 39.464° | 2026-08-11 15:06:22.771Z | 165.866° S |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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